PINGING... Please
________________________________ From: Andrey Shinkevich <andrey.shinkev...@virtuozzo.com> Sent: Wednesday, May 13, 2020 12:50 PM To: qemu-block@nongnu.org <qemu-block@nongnu.org> Cc: qemu-de...@nongnu.org <qemu-de...@nongnu.org>; kw...@redhat.com <kw...@redhat.com>; mre...@redhat.com <mre...@redhat.com>; arm...@redhat.com <arm...@redhat.com>; f...@euphon.net <f...@euphon.net>; js...@redhat.com <js...@redhat.com>; stefa...@redhat.com <stefa...@redhat.com>; ebl...@redhat.com <ebl...@redhat.com>; Denis Lunev <d...@virtuozzo.com>; Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>; Andrey Shinkevich <andrey.shinkev...@virtuozzo.com> Subject: [PATCH v5 00/15] Apply COR-filter to the block-stream permanently With this series, all the block-stream COR operations pass through the COR-filter. The patches 01-08/15 are taken from the series "block: Deal with filters" by Max Reitz, the full version of that can be found in the branches: https://git.xanclic.moe/XanClic/qemu child-access-functions-v6 https://github.com/XanClic/qemu child-access-functions-v6 When running iotests, apply "char-socket: Fix race condition" to avoid sporadic segmentation faults. v5: 01: Included forgotten file block/copy-on-read.h v4: 01: Initialization of the COR-filter BDRVStateCOR member. v3: 01: The COR filter insert/remove functions moved to block/copy-on-read.c to be a part of API. 02: block/stream.c code refactoring. 03: The separate call to block_job_add_bdrv() is used to block operations on the active node after the filter inserted and the job created. 04: The iotests case 030::test_overlapping_4 was modified to unbound the block-stream job from the base node. 05: The COR driver functions preadv/pwritev replaced with their analogous preadv/pwritev_part. v2: 01: No more skipping filters while checking for operation blockers. However, we exclude filters between the bottom node and base because we do not set the operation blockers for filters anymore. 02: As stated above, we do not set the operation blockers for filters anymore. So, skip filters when we block operations for the target node. 03: The comment added for the patch 4/7. 04: The QAPI target version changed to 5.1. 05: The 'filter-node-name' now excluded from using in the test #030. If we need it no more in a final version of the series, the patch 5/7 may be removed. 06: The COR-filter included into the frozen chain of a block-stream job. The 'above_base' node pointer is left because it is essential for finding the base node in case of filters above. Andrey Shinkevich (7): block: prepare block-stream for using COR-filter copy-on-read: Support change filename functions copy-on-read: Support preadv/pwritev_part functions copy-on-read: add filter append/drop functions qapi: add filter-node-name to block-stream iotests: prepare 245 for using filter in block-stream block: apply COR-filter to block-stream jobs Max Reitz (8): block: Mark commit and mirror as filter drivers copy-on-read: Support compressed writes block: Add child access functions block: Add chain helper functions block: Include filters when freezing backing chain block: Use CAFs in block status functions commit: Deal with filters when blocking intermediate nodes block: Use CAFs when working with backing chains block.c | 275 ++++++++++++++++++++++++++++++++++------- block/commit.c | 85 ++++++++++--- block/copy-on-read.c | 159 ++++++++++++++++++++++-- block/copy-on-read.h | 36 ++++++ block/io.c | 19 +-- block/mirror.c | 6 +- block/monitor/block-hmp-cmds.c | 4 +- block/stream.c | 89 +++++++++---- blockdev.c | 19 ++- include/block/block.h | 6 +- include/block/block_int.h | 67 +++++++++- qapi/block-core.json | 6 + tests/qemu-iotests/030 | 17 +-- tests/qemu-iotests/141.out | 2 +- tests/qemu-iotests/245 | 10 +- 15 files changed, 661 insertions(+), 139 deletions(-) create mode 100644 block/copy-on-read.h -- 1.8.3.1